Center channels are a WAY fun DIY project. Just finding a configuration that physically mates with the video setup is a challenge.
In this one for Hamilton, I just grabbed the classic D'Appolito MTM alignment and used BB6P for the box calculations. It makes a shallow-profile (6") box that can be wall mounted, or in the installation shown, mounted under-screen with a bit of upward tilt toward the seating area:
http://audioheritage.org/vbulletin/s...ead.php?t=7004
In retrospect, since we adjusted the crossover frequency a bit, studying the actual performance might reveal an optimized woofer spacing.
Hamilton's mains are 4430's, so the 2342 biradial seemed a good match. He went on to construct two-way surrounds using them and LE14A's, which also worked out:
http://manuals.harman.com/JBL/HOM/Te...200t3%20ts.pdf
I've done some subsequent work with various drivers on 2342's, and concluded that 2416H-1 sounds better than the cheaper 2418H-1. Working with 2426H on them now, what Hamilton used, I may have some recommendations for crossover tweaks soon.
We've already had several suggestions here in the new DIY forum that we should just sell this old stuff and buy professionally-designed systems. I kinda like Toddalin's response, if I may exercise license to paraphrase:
"I KNOW there's better systems out there to buy. I have what I have, tho, and I just want to make it work its best...."
Somehow, buyin' plastic models was never as satisfying as building 'em from scratch.... :p
Andre gets it, apparently. Is there anywhere but here to purchase that smile?